Isolated DC-DC converter
26 May 2010
Power Electronics / Power Management
Picor, a subsidiary of Vicor specialising in the design and development of high-performance power management solutions, has developed the PI3101 Cool-Power high-density isolated DC-DC converter, targeted at end-systems such as advanced telecom and wireless infrastructure, networking and communications, power-over-Ethernet applications and high-speed server platforms.
Delivering a regulated 3,3 V output at up to 18 A output current, from a wide input voltage range of 36 V to 75 V d.c., the device achieves 25 W/cm² power density and optimises board area by providing 16,5 W/cm². The PI3101 combines isolation, voltage transformation and output regulation into a surface-mount power-system-in-package (PSiP) platform with a footprint of 3,6 cm² and low profile of 6,7 mm.
The Cool-Power family is built on a proprietary ZVS topology using advanced control silicon integration, state-of-the-art planar magnetics and high performance power semiconductor technology, enabling switching frequencies in excess of 1 MHz with up to 87% efficiency. Fast transient response to dynamic loads limits the requirement for output bulk capacitance and EMI performance is improved due to the inherent low-noise and high-frequency characteristics of the product.
The PI3101 is fully equipped with a variety of programmable features including ±10% output voltage trimming, programmable soft-start capability, remote on/off enable and an accurate temperature monitor function that provides an analog output voltage proportional to the internal temperature of the product, serving also as a fault alarm. It is self-protected against various fault conditions, including input over-voltage and under-voltage lockout with auto-restart capability, over-temperature and output over-voltage protection with auto restart capability and a dual current limit threshold to protect against short circuits and overload conditions.
For more information contact ECS, +27 (0)12 345 6132, [email protected], www.ecssa.co.za
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